Two-speed gear for motor-cycles.



No. 865,583. RATENTED SERT. '10, 1907.

E. E. FULLER.

Two SPEED GEAR EoR MOTOR GYoLEs.

APPLIOATION FILED MAR. 20, 19.07.

No. 865,583. PATENTED SEPT. 10, 1907. H. H. FULLER.

TWO SPEED GEAR FOR MOTOR CYCLES.

APPLICATION FILED MAB.. 20, 1907. v

2 SHEETS-SHEET 2.

ATENT eindenA HARVEY HnFULLER, OF luOS ANGELES, CALIFORNIA.

TWO-SPEED GEAR FOR MOTOR-CYCLES.

,spcification of Letters Patent.

Patented Sept; I0, 1907.

Application iiled March 20, 1907. Serial No. 363,515.

To all whom it 4may concern:

Be it known that I, HRVEY H. FULLER, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented a new and useful Two-Speed Gear for Motor- Cycles, .of which the following is a specification.

An object of this invention is to provide a two-speed gear for motor cycles which is adapted to vary the speed of the machine during the travel of the same over roads, without causing a shock or jolt to the same, or injuring any of the parts by an unnecessary or excessive amount of friction, and to accomplish a change of speed by the movement of the pedals Without necessitating the operator of the machine to change his `position or to employ any cumbersome mechanism for this purpose.

Another object of the invention is to provide a device of this kind which may be used in connection either with self-propelled vehicles of the ordinary type of machine in present use, or with specially-constructed machines.

Another object of the invention is to provide a simple and efficient device for readily climbing hills or traveling through sandy or loamy soils;or, in fact, in any place where a great amount of power is required.

Another object of the invention is to provide a tWo-' speed drive for motor cycles with two chains operating two sprockets of different sizes, and which may be thrown into and out of motion by simply actuating the pedals in a forward or rearward direction.

Another object of the invention is to provide a drive for motor cycles which will permit the engine to move independently without moving the machine and also permit the machine to be moved along without moving the engine. I i

The accompanying drawings'illustrate the invention.

Figure l is aplan view partly in section; Fig. 2, a sectional frigmentary plang-LFigf a section on lines ri-5c", Fig. 4; Fig. 4, a seetioli'showing the different positions of the clutch in dotted lines; Fig. 5, ya detail front elevation of the clutch-sleeve; Fig. 6, a detail c nd elevationof the clutch-sleeve; Fig. 7, anend view ol the hl'xb showing the teeth for (.Tngaging the clutch- Vslecveg Fig. S, an enlarged detail oi the washer, showing leather and pin; and Fig. 9, an enlarged detail of the cone showing theholes to be engaged by pin of washer.` f Fig. 10 is -a fragmentary section of thehubshell and clutch-sleeve showing the interposed spring.

1 designates a crank having solidly connected-therewith an axle 2. i crank 3 removably secured to it by Cotter-pin 4. IA sprocket 5 is integrally united with thea'xle Tand crank 1, although lthis construction is not necessary,

On the end'of this axlelis another since it may be made separately and then attached in any usual manner.

- lA countershaft 6 incases the axle and extends to I same agairfst the surface oi cones 11, 12, one of which,-

nsmely, 11,-is provided with'interior screw-threads which engage the screw-threaded portion 18 of the axle 2v.

14 isa lock-washer providedwith a stop pin 15 which engages holes in the cone 11. This lock-washer has a feather 16 on its interior periphery which engages a groove or slot in the axle 2 to secure positive engagement therewith,land to prevent the independent revolution of the same on the axle. This lock-washer is held firmlyv against the cone by means of a lock-nut 17 which engages the threads of the axle Zand rigidly secures the cone to the axle, By this means the adjustment of the bearings is effected.

The aforementioned conntershaftt isprovided on itsA extremity. .with left-hand threads 18 and right-hand' threads y19.` The left-hand"threads terminate in a shoulder 2O.i `The sprocket 21 engages the left-hand threads 1-8'on the 'countershafn and abuts against the shoulder 2O provided thereon. The lock-nut. 22 engages the right-hand threads 19 and fixes the sprocket `2l against anyrevolution ou and independent of the countershaft 6. ,n

23 'are ball-cups provided in the sprocket l and arranged to hold the balls 24 against the cones .5 which are screwed onto the eccentric 2li by means of a ,righthand thread l 27 is' a lock-'washerwhich bears agains'tfthe cone 25,

and 2S is a lock-nut bearing against the hwk-washer and screwed onto the end oi' the eccentric in order to lix the cone 25 against rotation.v The lock-washer in this instance is not provided with a pin as in the firstnamcd instance, to engage the cone, because the cone yis stationary, and is merely a bearing for the balls 24 which revolve around the cone with the sprocket 21A The 'cone and lock-nut are provided with Spannerholes 29 to be engaged by a wrench, whereby the4 adjustment is effected. 'The eccentric 2G ismounted within the hanger-bracket 30, and is fixed thereto by nnansl of ring-clamps 31 which compress the hangerbracketcausing the engagement of thewalls of the bracket with the eccentric 26.

The eccentric ilsclf is provided for the purpose of Iadjusting nr tightening thc chain which-connccls with the prime-mover, not showrnthe adjustment being effected by a spanner-wrench engaging the holesl 33 provided in the eccentric.

34 is a stationary axle of the rear wheel of a motorcycle. v

35 is aslotted rear fork, the slotted portion being engaged by the axle.

36 is a washer bearing against the slotted end of the rear fork, and 37 a nut for'clamping the axle in the fork' 35.

38 are cones screwed on the axle and adapted to accommodate a plurality of balls 39 held in place by ballcups 40. These ball-cups are rigidly fixed in a hollow boss 41 of the sprocket 42. This sprocket is formed integral with a sleeve 43 having a reduced portion 44 surrounding and incasing the axle 34, said reduced portion being provided with threads 45. l

46 is an inclined annular surface provided on the sleeve 43. A

The'sprocket 42 is connected with the sprocket 5 by a chain 47. commodate a plurality of balls 49, and to form a bearing for the ball-cup 50 which is fixed in the annular ho1lo`w boss 5l of the high-speed sprocket 52, which sprocket is connected by a chain 52/ with the sprocket 2l. The' sprocket 52 is independent of the sprocket 42 and revolves on `the bearings 48 of the sleeve 43 and l .54 of the boss 53. Said sprocket 52 is provided with internal teeth 53/ provided in a boss 53 of said `sprocket.

55 is a shifting nut which engages the screw threads 45 provided on the reduced portion 44 of the sleeve 43.

56 is a clutch-sleeve fitting over -the shifting nut 55 and composed of two parts 57, 58, the two parts being screwed together to form a unit. This clutch-sleeve 56 is provided with external teeth 59 which snugly but loosely engage. the internal teeth 6U provided in the hub-shell 6l. v

62 is a ball-thrust interposed between the shiftingnut 55 and the part 58 ofthe clutch-sleeve 56. The part 58 of the clutch-sleeve is provided with an annular taper or inclined surface 63, which taper or inclined surface is adapted, when the clutch-sleeve 56 is moved by the shifting-nut 55, to engage the'inclined surface or taper-i6 provided on the sleeve 43. Previous to this movement,vhowever, the clutch-sleeve 56, by movement of the sprocket-42 through the pedals, is caused the pedals causes the inclined surface ortaper 63 to ride upon and engage the inclined surface 46 of the sleeve 43 and'lock the sleeve and sprocket 42 with the clutch-sleeve 56 and the hub-shell v61, whereby the device is propelled by the movement of the pedals in a forward direction, thus starting the initial combustionv in the engine if the prime-mover be a gasolene engine. After th machine is started, a slight rearward pedal- Hg throws the clutchsleeve 56 off of the inclined sur- The sleeve43 has a cone 48 arranged to acface 46, though still retaining engagement with the' teeth 53 of the sprpcket 52, this action serving to allow the engine vto propel the vehicle irrespective and independent ofthe pedals. I

64 is a threaded frictionsleeve engaging the countersunk portion 65 in the shifting nut 55, and secured therein by screws 66. This friction sleeve is split and engaged by a nut 67 having a tapered thread which compresses the same upon the axle 34, thereby to' .prevent the rotation of said shifting nut with the movement or rotation of the reducedportion of the sleeve carrying the threads 45 which engage the shifting nut. 4. Theaxle 34 is slightly lsmaller'at 68 than at the remaining part of the axle in order to lessen the frictionv of the friction-sleeve upon the axle when engagement of the surfaces 63 and 46 has taken place. The friction of the friction-sleeve on the axle, however, is of course not sufficient to preventv lateral shifting. lt is intendv smaller portion 68 of the axle, and is then free to rotate y with the rotating elements of the machine.

69 is a low-speed gear or a large sprocket-wheel connected lby chain 70 with the small sprocket 8 mountedon countershaft 6. This sprocket 69 is provided with internal teeth 71 which are adapted to be Lengaged by portion 57 of the clutch-sleeve 56. The movement of the clutch-sleeve to engage the teeth 71 of the sprocket v T he internal teeth of the sprockets and the outer points of the external teeth `of the clutch-sleeve, are rounded to facilitate mutual engagement during the moving of the device. The clutch-sleeve is steadily revolving in the direction of the sprockets and is capable of being shifted during the revolution, either to one side or the other. The shifting and consequent engagementof the clutch with the-teethproduces no shock, or an almost imperceptible one.

An oil-hole 72 is provided in the hub-shell 61 by means of which the interior mechanism may be properly lubricated'. Oil holes, not shown, may also be provided in theclutch-sleeve to allow the oil to reach all the parts of the mechanism. The sprockets 42, 52,-

and 69 are provided with dust-proof -caps 73 which are parts of the sprocket and preferably made integral therewith. l

The cone 38 serves to adjust all of the bearings.

To prevent jarring, rattling, or slipping of the clutch-- sleeve 56 and the disengagement of the clutch from the teeth of both the high and low speed sprockets, which. is liable to occur during the travel of the machine over the hub-shell. Said springs are secured in place by screws 76. The opposite ends of said springs are knurled, as seen at 77, t0 engage a similarlyknurled portion 78 inthe hub shell 6l, which at opposite lpoints thereof, as seen at c and d, has one tooth removed to accommodate the springs. These springs 74 permit ofthe movement of the clutch-sleeve 56 by the sprocket 42, and yet effectnally prevent the accidental shifting and rattling of the vai-ions transmitting elements.

What I claim is:-l

1. A fixed axle,.a sleevc on said axle, a sprocket on said sleeve, a hub surrounding' said sleeve and axle, variable speed transmitting;l elements on said axle, and means for clutching' one or the other of said elements.

L. A tixed axle. a driving' element on said axle, variable speed transmission elements on said axle and means on said driving element for cansinggan engagement with said driven elements,

The combination with a wheel having:r a hub and aA fixed axle. of variable speed transmission gears loose on said axle, a clutch sleeve interposed between said hub and axle and in positive engagement with said hub, said sleeve being slidable with respect to said hub, 'a sleeve loosely Surrounding said axle, and means carried and operable by said sleeve for moving said clutch sleeve into engagement with said gears.

4. 'lhe combination with a wheel having a hub and a [ixed axle. oi.' an initial-moving,l element on said axle, a high-speed gear on said element. a low-speed :gear loose on said axle, a clutch sleeve carried by said hub' and in constant engaamnent therewith, said clutch sleeve being shittahle relativelyklo said hul'. and means carried by said initial-moving,-l element tor movingsaid clutch sleeve to engage said high-speed or said lowspeed gears at differenttimes during.: the revolution thereof.

5. The combination with a wheel lia-vlnr; a huh and a fixed axle. of an initial moving' clement loose on said axle,'

said element provided with an inclined surface, a clutch sleeve engaging said hnb, a high-speed 'gear loose on said element. a low-speed gear loose on said axle. and means operable by said initial moving element for shifting said clnlch sleeve in engagement with one or the other of said 'gears and frictionally connecting said clutch sleeve with `tl|e inclined surface of said initial moving; clement,

(i. 'lhe combination with a wheel having a hnb and a fixed axle. of an initial movin;`- element loose on said axle, a high speed gear loose on said. element' and a low speed gear loose on said axle. a clntch sleevel in engagement With said hub, means for shifting,- said clutch sleeve into en gagemcnt with one or the other of said gears, and means foi-.locking said clntch sleeve on said initial moving elelllchi.

T. 'lhe combination with a wheel having; a hub and 'a lixed axle, of an initial-moving@Y element loose on said axle, a higlrspeed gearloose on said element and a low-speed :rear loose on said axle, a clutch sleeve in engagement with 'said hub, means for shitting;l said clutch sleevevinto engage ment with one or the other of said gears, and means for positively7A locking; said clutch sleeve on said rhigh-speed gear and said initial-moving element.

The combination with a wheel havingl a hub and a fixed axle. ot` an initial-moving element loose on said axle, a high-speed gear loose on said' element and a low-speed gear loose on saidl axle, e el'ntch sleeve in engagement with said hub. means for shifting said clutch sleeve into engagement with one or the other of said gears, and means for either said high speed or said low speed gear, and means for frictionally locking said sleeve on said initial-moving element.

1o. 'llie combination with n wheel having a hub, and an axle, of varlable'speed transmission elements loose on said i axle. teeth on said elements, a clutch sleeve engaging said ling said means.

12. 'lhe combination with a wheel having a hub, and a Iixed axle,`of laninitial moving' elementloose on vsaid axle, said element being provided with an .inclined surface, a clutch sleeve engaging'said hub, ahigh speed gear loose 011 said element, a low speed gear loose on said axle, means operable by said initial moving element for shifting said clutch to engage said high or low speed gearsV at different periods and frictionally connecting said clutch sleeve with the inclined surface of said yinitial moving elementpand means for disengaging said clutch sleeve from said inclined surface.

dil. The combination'with a' wheel having' a hub and a tixed axle, of anini'tial moving element loose on said axle, a high speed gear on`said element, a low speed gear loose on said axle, a clutch lsleeve carried bysaid hub, and in constant engagement therewith, said clutch sleeve being shit'table relatively to saidv hub, a shifter on said initial' moving` element and operable thereby for moving .said clutch sleeve,l to' engage said high speed or said low speed gears at different times during the revolution thereof.

14. The combination with a Wheel having a hub and a stationary axle, of an initial moving element loose on said axle. vsaid element being provided with' an inclined`snrface and screw threads, a clntchsleeve engaging said hnb, a

.high-speed gear loose onsaid element, a `low-speed gear loose on said axle, a shifter engaging'f'the threads on said initial-moving; element for moving said clutch to engage 5 said high or said low speed gears at Vdifferent periods and frictionally connecting said clutch Vsleeve lwith the inclined 'surface of said initial-moving element, and means operable by the reverse movement of said initial-moving element for disengaging said clutch sleeve'from saidinclined sur-4 4 initial-moving element, and a .ball-thrust interposed bef' tween said shifter and said clutch sleeve, said shifter sery' ing,l to move said clutch into engagement with said gears and cause an engagement of said clutch with said inclined surface to connect said initial-moving element with said clutch and said low-speed gear. a f

d6. The combination with a Wheel having a hub, and

-an axle, of variable speed transmission elements loose on 'said axle, teeth on said elements, a clutch sleeve engaging 1 saidhub and arranged to engage said teeth, means 'for' Shifting said clutch sleeve, and means for preventing the disengagement of said clutch sleeve from the teeth of said element. l v

17. The combination 'withV a'wheewl having a hub, and an axle, of variable speed transmission elements loose .on

said axle, teeth on.said elements, a clutch 'sleeve engaging said hub and arranged to engage said teeth,` means for shifting said clutch sleeve, andal spring for preventing the disengagement of said clutch sleeve.

In testimony where of,-I have .hereunto set my ,hand at Los Angeles California this 11th day off-March 1907.

. -HARVEY H.l FULLER,

-In presence of- Jamas R. ToWNsnNn, -AN'roNy 'G L'on'rzNnx.

asf 

